Utilization of solubilizing and stabilizing agents in electrokinetic processing of soils
- Lehigh Univ., Bethlehem, PA (United States). Dept. of Civil and Environmental Engineering
Throughout the globe there are numerous inactive waste sites that have resulted from a combination of engineered and unplanned releases at research and production facilities. Common contaminants include lead, chromium, arsenic, zinc, copper, cadmium, and nickel. Many of these sites also have other waste materials such as organic acids, solvents and complexing agents. These contaminants exist in the vadose zone and in some cases are found to have migrated towards the ground water. The use of electrokinetics in soil and groundwater decontamination promises to be an effective method for both cost savings and reduction in health and environmental risks aspects. In field application of the process, the soil being remediated need not to be disturbed to cause release of the contaminants. The process controls the direction of contaminant transport which may be captured in collection wells or other installations, such as exchange resins, carbon filters and membranes. Only when the system is designed relevant to the site being remediated based on an informed and systematic approach, the end product will be a better engineered electrokinetics process for soil decontamination in field, whether it is used alone or in conjunction with another technology for enhancement. This paper looks into the feasibility of two applications to enhance electrokinetic treatment of heavy metal contaminated soils. The firs application deals with the enhancement of the transport and the second one deals with in-situ stabilization of targeted substances using electrokinetic and electro-chemical methods.
- OSTI ID:
- 250952
- Report Number(s):
- CONF-9507204--
- Country of Publication:
- United States
- Language:
- English
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